Brompton 5 Speed (S.A. Sprinter Hub) Wheel rebuild

[bluesdave]

Hi, the rear wheel rim has split on my 1999 5 Speed Brompton (SA Sprinter hub) I'm desperate to get it back on the road but have run into difficulties identifying the correct rim and spokes for the re-build. The Brompton support dept. said i required a 16 ins single wall rim with 149mm spokes (now discontinued) but that 148mm would do with longer toggles. I checked with 2 Brompton dealers who both agreed that what I needed was in fact the double wall rim, angle drilled, but they differed on the spoke sizes. One said 146mm the other 148mm.
Anyone out there know the correct bits I need to do the job? If so, I would be most grateful hear from them.

[Brucey]

see

https://trade.brompton.com/Uploads/QPart/QPart-Datasheets/ds-wheel.pdf

NB there may be a small difference between a 'sprinter' hubshell and a BWR/BSR hub. Because of the effect of the spoke crossings, this won't result in a very large error in spoke length.

cheers

[bluesdave]

Grateful for you help. Thank you.

[Brucey]

BTW if your hub is one of the ones with the bigger flanges than normal or you just want to double-check, you can use this spoke length calculator

https://leonard.io/edd/

which will accept your measured values for hub and rim dimensions.

The current Brompton double-walled rim is 328mm ERD BTW

cheers

[bluesdave]

Brilliant, thank you. I'm glad I joined!

[nez]

Bruce is a technical oracle. What on earth would we do without him?

[Patrickpioneer]

I'm a bit late on this but 'bankrupt bikes' on ebay is selling the old style rims, two from under thirty quid,

https://www.ebay.co.uk/itm/16-x-1-3-8-R ... 2749.l2649